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<div class="title">bits/bitmask.h</div>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#pragma once</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span>
<a name="l00003"></a>00003 <span class="preprocessor">#include &lt;nih/basic/types.h&gt;</span>
<a name="l00004"></a>00004 
<a name="l00005"></a>00005 <span class="keyword">namespace </span>nih {
<a name="l00006"></a>00006 
<a name="l00007"></a>00007 <span class="keyword">template</span> &lt;u<span class="keywordtype">int</span>32 WORDS&gt;
<a name="l00008"></a><a class="code" href="structnih_1_1_bitmask.html">00008</a> <span class="keyword">struct </span><a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>
<a name="l00009"></a>00009 {
<a name="l00010"></a>00010     NIH_HOST_DEVICE <a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>() { <span class="keywordflow">for</span> (int32 i = 0; i &lt; WORDS; ++i) bits[i] = 0; }
<a name="l00011"></a>00011 
<a name="l00012"></a>00012     NIH_HOST_DEVICE <span class="keywordtype">void</span> <span class="keyword">set</span>(<span class="keyword">const</span> int32 i)
<a name="l00013"></a>00013     {
<a name="l00014"></a>00014         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00015"></a>00015         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00016"></a>00016         bits[ word_index ] |= (1 &lt;&lt; bit_index);
<a name="l00017"></a>00017     }
<a name="l00018"></a>00018     NIH_HOST_DEVICE <span class="keywordtype">void</span> clear(<span class="keyword">const</span> int32 i)
<a name="l00019"></a>00019     {
<a name="l00020"></a>00020         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00021"></a>00021         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00022"></a>00022         bits[ word_index ] &amp;= ~(1 &lt;&lt; bit_index);
<a name="l00023"></a>00023     }
<a name="l00024"></a>00024     NIH_HOST_DEVICE <span class="keywordtype">bool</span> <span class="keyword">get</span>(<span class="keyword">const</span> int32 i) <span class="keyword">const</span>
<a name="l00025"></a>00025     {
<a name="l00026"></a>00026         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00027"></a>00027         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00028"></a>00028         <span class="keywordflow">return</span> bits[ word_index ] &amp; (1 &lt;&lt; bit_index);
<a name="l00029"></a>00029     }
<a name="l00030"></a>00030 
<a name="l00031"></a>00031     NIH_HOST_DEVICE int32 get_word(<span class="keyword">const</span> int32 i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bits[i]; }
<a name="l00032"></a>00032 
<a name="l00033"></a>00033     int32 bits[WORDS];
<a name="l00034"></a>00034 };
<a name="l00035"></a>00035 <span class="keyword">template</span> &lt;&gt;
<a name="l00036"></a><a class="code" href="structnih_1_1_bitmask_3_011_01_4.html">00036</a> <span class="keyword">struct </span><a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>&lt;1&gt;
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038     NIH_HOST_DEVICE <a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>() : bits(0) {}
<a name="l00039"></a>00039 
<a name="l00040"></a>00040     NIH_HOST_DEVICE <span class="keywordtype">void</span> <span class="keyword">set</span>(<span class="keyword">const</span> int32 i)       { bits |= (1 &lt;&lt; i); }
<a name="l00041"></a>00041     NIH_HOST_DEVICE <span class="keywordtype">void</span> clear(<span class="keyword">const</span> int32 i)     { bits &amp;= ~(1 &lt;&lt; i); }
<a name="l00042"></a>00042     NIH_HOST_DEVICE <span class="keywordtype">bool</span> <span class="keyword">get</span>(<span class="keyword">const</span> int32 i) <span class="keyword">const</span> { <span class="keywordflow">return</span> bits &amp; (1 &lt;&lt; i); }
<a name="l00043"></a>00043 
<a name="l00044"></a>00044     NIH_HOST_DEVICE int32 get_word(<span class="keyword">const</span> int32 i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bits; }
<a name="l00045"></a>00045     NIH_HOST_DEVICE int32 get_bits(<span class="keyword">const</span> int32 offset)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bits &gt;&gt; offset; }
<a name="l00046"></a>00046 
<a name="l00047"></a>00047     int32 bits;
<a name="l00048"></a>00048 };
<a name="l00049"></a>00049 <span class="keyword">template</span> &lt;&gt;
<a name="l00050"></a><a class="code" href="structnih_1_1_bitmask_3_012_01_4.html">00050</a> <span class="keyword">struct </span><a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>&lt;2&gt;
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052     NIH_HOST_DEVICE <a class="code" href="structnih_1_1_bitmask.html">Bitmask</a>() { bits0 = bits1 = 0; }
<a name="l00053"></a>00053 
<a name="l00054"></a>00054     NIH_HOST_DEVICE <span class="keywordtype">void</span> <span class="keyword">set</span>(<span class="keyword">const</span> int32 i)
<a name="l00055"></a>00055     {
<a name="l00056"></a>00056         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00057"></a>00057         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00058"></a>00058         <span class="keywordflow">if</span> (word_index == 0) bits0 |= (1 &lt;&lt; bit_index);
<a name="l00059"></a>00059         <span class="keywordflow">if</span> (word_index != 0) bits1 |= (1 &lt;&lt; bit_index);
<a name="l00060"></a>00060     }
<a name="l00061"></a>00061     NIH_HOST_DEVICE <span class="keywordtype">void</span> clear(<span class="keyword">const</span> int32 i)
<a name="l00062"></a>00062     {
<a name="l00063"></a>00063         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00064"></a>00064         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00065"></a>00065         <span class="keywordflow">if</span> (word_index == 0) bits0 &amp;= ~(1 &lt;&lt; bit_index);
<a name="l00066"></a>00066         <span class="keywordflow">if</span> (word_index != 0) bits1 &amp;= ~(1 &lt;&lt; bit_index);
<a name="l00067"></a>00067     }
<a name="l00068"></a>00068     NIH_HOST_DEVICE <span class="keywordtype">bool</span> <span class="keyword">get</span>(<span class="keyword">const</span> int32 i) <span class="keyword">const</span>
<a name="l00069"></a>00069     {
<a name="l00070"></a>00070         <span class="keyword">const</span> int32 word_index = i &gt;&gt; 5;
<a name="l00071"></a>00071         <span class="keyword">const</span> int32 bit_index  = i &amp; 31;
<a name="l00072"></a>00072         <span class="keywordflow">return</span> (word_index ? bits1 : bits0) &amp; (1 &lt;&lt; bit_index);
<a name="l00073"></a>00073     }
<a name="l00074"></a>00074 
<a name="l00075"></a>00075     NIH_HOST_DEVICE int32 get_word(<span class="keyword">const</span> int32 i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> i ? bits1 : bits0; }
<a name="l00076"></a>00076 
<a name="l00077"></a>00077     NIH_HOST_DEVICE int32 get_bits(<span class="keyword">const</span> int32 offset)<span class="keyword"> const</span>
<a name="l00078"></a>00078 <span class="keyword">    </span>{
<a name="l00079"></a>00079         <span class="keyword">const</span> int32 word_index = offset &gt;&gt; 5;
<a name="l00080"></a>00080         <span class="keyword">const</span> int32 bit_offset = offset &amp; 31;
<a name="l00081"></a>00081         <span class="keywordflow">return</span> (word_index ? bits1 : bits0) &gt;&gt; bit_offset;
<a name="l00082"></a>00082     }
<a name="l00083"></a>00083 
<a name="l00084"></a>00084     int32 bits0;
<a name="l00085"></a>00085     int32 bits1;
<a name="l00086"></a>00086 };
<a name="l00087"></a>00087 
<a name="l00088"></a>00088 } <span class="comment">// namespace nih</span>
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